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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2017  >  39(3): 402-408
Zhang Xing, Wang Zhenzhen, Wang Shuai, Li Fang, Liu Hongxian. Visual contact characteristics and characterization of the CO2 and n-pentane/crude oil interface[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(3): 402-408. doi: 10.11781/sysydz201703402
Citation: Zhang Xing, Wang Zhenzhen, Wang Shuai, Li Fang, Liu Hongxian. Visual contact characteristics and characterization of the CO2 and n-pentane/crude oil interface[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2017, 39(3): 402-408. doi: 10.11781/sysydz201703402
shu

Visual contact characteristics and characterization of the CO2 and n-pentane/crude oil interface

doi: 10.11781/sysydz201703402
  • 1.

    Faculty of Petroleum, China University of Petroleum-Beijing at Karamay, Karamay, Xinjiang 834000, China

  • 2. Geological Research Institute, No. 1 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

  • 3. Geological Research Institute, No. 2 Oil Production Plant, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China

  • Received Date: 2016-12-06
  • Rev Recd Date: 2017-03-30
  • Publish Date: 2017-05-28
    Abstract
  • CO2 miscible flooding is complex, including mass transfer, convection, phase transition and other issues. Some mechanisms are not clear and need in-depth study. The static characteristics of n-pentane or crude oil and CO2 in different phases were studied by using a CO2 miscible flooding visual device under different experimental pressures. CO2 and n-pentane or crude oil show different contact characteristics under different pressures. The relationship between n-pentane or crude oil relative height and time is a power function, and the curve at low pressure can also be approximately linear. The dissolution swelling rate of CO2 vs. n-pentane or crude oil under different pressure conditions shows a decreasing trend with time, and the curves are negative logarithmic. The factors influencing the relative height of n-pentane or crude oil and the dissolution swelling rate of CO2 vs. n-pentane or crude oil are mainly pressure and fluid properties.

     

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